A load circuit control method, device, medium and vehicle

Abstract

The present disclosure relates to a load circuit control method, device, medium and vehicle. The load circuit control method is applied to a controllable power supply controller. The controllable power supply controller supplies power to an electronic control unit. The electronic control unit is used to control the working state of a vehicle load. The load circuit control method comprises: determining a first threshold current of a load circuit based on the working state of the vehicle load. The load circuit comprises the electronic control unit. The real-time current of the load circuit is detected. The first comparison result is obtained by comparing the first threshold current and the real-time current. It is judged whether the load circuit has a short circuit fault according to the first comparison result. The present disclosure can determine whether the load circuit is abnormal when there is a short circuit fault in the load circuit, thereby expanding the diagnosis range of the load circuit fault condition and further reducing the risk of vehicle burning.

Description

Technical Field

[0001] This disclosure relates to the field of load circuit control technology, specifically to a load circuit control method, device, medium, and vehicle. Background Technology

[0002] Vehicles typically use fuses to protect their loads. Selecting the right fuse ensures it effectively protects the load circuit it's connected to. This means that in the event of an overcurrent in the load circuit, the fuse will blow first, causing the load circuit to burn out.

[0003] However, when a load short circuit fault occurs in the load circuit, the current in the load circuit is very small, and the fuse will not blow. Therefore, the fuse cannot determine whether a load short circuit fault has occurred in the load circuit, which may lead to the load circuit being burned out due to the load short circuit fault, or even cause the vehicle to catch fire. Summary of the Invention

[0004] To address the aforementioned technical problems, this disclosure provides a load circuit control method, apparatus, medium, and vehicle, which can also determine whether a load short circuit fault exists in the load circuit, expanding the diagnostic scope for load circuit faults and further reducing the risk of vehicle burnout.

[0005] This disclosure provides a load circuit control method applied to a controllable power controller, wherein the controllable power controller supplies power to an electronic control unit, and the electronic control unit is used to control the operating state of a vehicle load. The method includes:

[0006] A first threshold current of the load circuit is determined based on the operating state of the vehicle load, wherein the load circuit includes the electronic control unit;

[0007] Detect the real-time current of the load circuit;

[0008] The first threshold current and the real-time current are compared to obtain a first comparison result, and the load circuit is judged to have a short circuit fault based on the first comparison result.

[0009] Optionally, before determining the first threshold current of the load circuit based on the operating state of the vehicle load, the method further includes:

[0010] Acquire the status indication signal sent by the electronic control unit;

[0011] The operating status of the vehicle load is determined based on the status indication signal.

[0012] Optionally, determining whether the load circuit has a short-circuit fault based on the first comparison result includes:

[0013] If the first comparison result is that the real-time current is less than or equal to the first threshold current, it is determined that the load circuit has no short-circuit fault.

[0014] If the first comparison result indicates that the real-time current is greater than the first threshold current, it is determined that the load circuit has a short-circuit fault.

[0015] Optionally, if it is determined that the load circuit has a short-circuit fault, the method further includes:

[0016] A shutdown control command is generated and sent to the electronic control unit, the shutdown control command being used to instruct the electronic control unit to shut off power supply to the vehicle load;

[0017] In response to receiving a shutdown status indication sent by the electronic control unit, a second threshold current is determined, the shutdown status indication indicating that power supply to the vehicle load has been shut off;

[0018] The real-time current of the load circuit is detected again;

[0019] The real-time current and the second threshold current are compared to obtain a second comparison result, and the location of the short-circuit fault in the load circuit is determined based on the second comparison result.

[0020] Optionally, determining the location of the short-circuit fault in the load circuit based on the second comparison result includes:

[0021] If the second comparison result is that the real-time current is less than or equal to the second threshold current, then it is determined that a short circuit fault has occurred in the first sub-circuit. The first sub-circuit is the circuit located between the electronic control unit and the vehicle load in the load circuit.

[0022] If the second comparison result is that the real-time current is greater than the second threshold current, then it is determined that a short circuit fault has occurred in the second sub-circuit. The second sub-circuit is the load circuit other than the first sub-circuit.

[0023] Optional, also includes:

[0024] If a short-circuit fault is determined to have occurred in the second sub-circuit, power supply to the load circuit shall be stopped.

[0025] Optionally, the method further includes:

[0026] If a short circuit fault is detected in the load circuit, a prompt message is generated.

[0027] This disclosure also provides a load circuit control device, including:

[0028] The first threshold current determination module is used to determine the first threshold current of the load circuit based on the operating state of the vehicle load, wherein the load circuit includes the electronic control unit.

[0029] A real-time current detection module is used to detect the real-time current of the load circuit;

[0030] The short-circuit fault detection module is used to compare the threshold current and the real-time current to obtain a first comparison result, and to determine whether the load circuit has a short-circuit fault based on the first comparison result.

[0031] This disclosure also provides a computer-readable storage medium that stores a program or instructions that cause a computer to perform the steps of the method as described in any of the preceding embodiments.

[0032] This disclosure also provides a vehicle, characterized in that it includes:

[0033] One or more processors;

[0034] Memory, used to store one or more programs or instructions;

[0035] The processor executes the steps of the method described above by invoking programs or instructions stored in the memory.

[0036] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0037] The solution provided in this disclosure first obtains the operating status of the vehicle load, and then determines the first threshold current of the load circuit based on the current operating status of the vehicle load. The real-time current of the load circuit is detected, and compared with the first threshold current. Based on the first comparison result, it can be determined whether there is a short-circuit fault in the load circuit. This disclosure not only cuts off the power supply to the load circuit when a common short-circuit fault exists, but also enables the determination of whether the load circuit is malfunctioning even when a load-bearing short-circuit fault exists, thereby cutting off the power supply to the load circuit. This expands the diagnostic scope for load circuit faults and further reduces the risk of vehicle burnout. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0039] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A flowchart of a load circuit control method provided in this disclosure embodiment;

[0041] Figure 2 A flowchart of yet another load circuit control method provided in this disclosure embodiment;

[0042] Figure 3 This is a schematic diagram of a load circuit control device provided in an embodiment of the present disclosure;

[0043] Figure 4 This is a schematic diagram of a load circuit control device provided in an embodiment of the present disclosure;

[0044] Figure 5 This is a schematic diagram of the hardware structure of a vehicle provided in an embodiment of this disclosure. Detailed Implementation

[0045] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0046] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0047] Figure 1 A flowchart of a load circuit control method provided in this disclosure embodiment is shown below. Figure 1 As shown, the load circuit control method is applied to a controllable power controller, which supplies power to an electronic control unit (ECU). The ECU is used to control the operating state of the vehicle load. The method includes:

[0048] S110. Determine the first threshold current of the load circuit based on the operating state of the vehicle load.

[0049] Vehicle loads may include lights, fans, valves, air conditioning system components, etc.

[0050] Specifically, the threshold current for determining a fault in the load circuit differs depending on the vehicle load's operating state. Therefore, the controllable power controller needs to first determine the vehicle load's operating state and then determine the first threshold current of the load circuit based on that state. The first threshold current is the current flowing through the load circuit when the vehicle load is in normal operating condition. The load circuit includes an electronic control unit (ECU), which controls the operating state of the vehicle load.

[0051] S120, detects the real-time current of the load circuit.

[0052] Specifically, the current in the load circuit when the vehicle load is working normally is different from the current in the load circuit when the load is abnormal. Therefore, the controllable power controller needs to detect the real-time current in the load circuit and use the detected real-time current as the comparison object.

[0053] S130. Compare the first threshold current and the real-time current to obtain the first comparison result, and determine whether there is a short circuit fault in the load circuit based on the first comparison result.

[0054] Specifically, the first threshold current is the threshold current of the load circuit under the current operating state of the vehicle load. The first threshold current is compared with the real-time current of the load circuit under the current operating state of the vehicle load to obtain the first comparison result. Based on the first comparison result, the controllable power controller can determine whether there is a short circuit fault in the load circuit.

[0055] In the solution provided by this disclosure, the controllable power controller first acquires the operating status of the vehicle load, and then determines the first threshold current of the load circuit based on the current operating status of the vehicle load. The real-time current of the load circuit is detected, and compared with the first threshold current. Based on the first comparison result, it can be determined whether there is a short-circuit fault in the load circuit. This disclosure not only cuts off the power supply to the load circuit when a common short-circuit fault exists in the load circuit, but also enables the determination of whether the load circuit is malfunctioning when a load-bearing short-circuit fault exists, thereby cutting off the power supply to the load circuit. This expands the diagnostic scope for load circuit faults and further reduces the risk of vehicle burnout.

[0056] In some embodiments, Figure 2 A flowchart of another load circuit control method provided in this disclosure embodiment is shown below. Figure 2 As shown, before determining the first threshold current of the load circuit based on the vehicle load's operating state, the process also includes:

[0057] S140: Obtain the status indication signal sent by the electronic control unit.

[0058] S150. Determine the working status of the vehicle load based on the status indication signal.

[0059] Specifically, since the operating state of the vehicle load is controlled by the electronic control unit, the controllable power controller needs to obtain the status indication signal sent by the electronic control unit. Based on the status indication signal sent by the electronic control unit, the actual required operating state of the vehicle load can be determined. Then, based on the operating state of the vehicle load, the threshold current of the load circuit under this operating state can be determined.

[0060] In some embodiments, see continue to see Figure 2 Based on the first comparison result, determine whether there is a short circuit fault in the load circuit, including:

[0061] S131. If the first comparison result is that the real-time current is less than or equal to the first threshold current, it is determined that there is no short circuit fault in the load circuit.

[0062] Specifically, if the real-time current is less than or equal to the first threshold current, the controllable power controller considers that all vehicle loads in the load circuit are in normal working condition and there is no short circuit fault in the load circuit.

[0063] S132. If the first comparison result is that the real-time current is greater than the first threshold current, it is determined that there is a short circuit fault in the load circuit.

[0064] Specifically, if the real-time current is greater than the first threshold current, the controllable power controller will consider that the vehicle load in the load circuit is malfunctioning and there is a short circuit fault in the load circuit.

[0065] In some embodiments, see continue to see Figure 2 In cases where a short-circuit fault is determined in the load circuit, the method also includes:

[0066] S161. Generate a shutdown control command and send it to the electronic control unit. The shutdown control command is used to instruct the electronic control unit to shut off power supply to the vehicle load.

[0067] Specifically, when a short-circuit fault is detected in the load circuit, the controllable power controller sends a shutdown command to the electronic control unit. In response to the received shutdown command, the electronic control unit shuts off the power supply to the vehicle load.

[0068] S170, in response to receiving a shutdown status indication sent by the electronic control unit, determine a second threshold current, the shutdown status indication being used to indicate that power supply to the vehicle load has been shut off.

[0069] Specifically, after the electronic control unit shuts off power to the vehicle load, it generates a shutdown status indication. The controllable power controller uses this indication to determine the second threshold current as the current at the fault location in the load circuit. Upon receiving the shutdown status indication from the electronic control unit, the controllable power controller determines that the vehicle load should be in a shutdown state. At this point, the controllable power controller sets the threshold current used for this determination as the second threshold current.

[0070] S180, Detect the real-time current of the load circuit again.

[0071] Specifically, the current in the load circuit when the vehicle load is normally in the off state is different from the current in the load circuit when the vehicle load is not normally in the off state. Therefore, the controllable power controller needs to detect the real-time current in the load circuit again as the detection object.

[0072] Optionally, a second comparison result is obtained by comparing the real-time current and the second threshold current, and the location of the short-circuit fault in the load circuit is determined based on the second comparison result.

[0073] Specifically, when the electronic control unit (ECU) is functioning normally, it can properly shut off the power supply to the vehicle load. At this time, the current in the load circuit should meet the requirements. If the current in the load circuit does not meet the requirements, the ECU can be considered to be malfunctioning. Therefore, the controllable power controller needs to compare the real-time current of the load circuit with the second threshold current. Based on the comparison result of the real-time current and the second threshold current, the location of the short-circuit fault in the load circuit can be determined.

[0074] This disclosure not only cuts off power supply to the load circuit when a common short-circuit fault exists, but also enables the determination of whether the load circuit is malfunctioning even when a load-bearing short-circuit fault exists, thereby cutting off power supply to the load circuit. This expands the diagnostic scope for load circuit faults and further reduces the risk of vehicle burnout. Furthermore, this disclosure can determine the location of the short-circuit fault based on the comparison between the real-time current and the threshold current in the load circuit, facilitating timely fault location after occurrence and simplifying repair of the faulty circuit.

[0075] In some embodiments, see continue to see Figure 2 The location of the short-circuit fault in the load circuit is determined based on the second comparison result, including:

[0076] S191. If the second comparison result is that the real-time current is less than or equal to the second threshold current, then it is determined that a short circuit fault has occurred in the first sub-circuit.

[0077] Specifically, the first sub-circuit is the circuit located between the electronic control unit (ECU) and the vehicle load in the load circuit. When the second comparison result shows that the real-time current is less than or equal to the second threshold current, the controllable power controller considers the ECU to be operating normally and shuts off power supply to the vehicle load. Therefore, it can be determined that a short circuit fault has occurred in the circuit between the ECU and the vehicle load. The ECU stopping power supply to the vehicle load prevents the first sub-circuit from burning out due to the short circuit fault.

[0078] S192. If the second comparison result is that the real-time current is greater than the second threshold current, then it is determined that a short circuit fault has occurred in the second sub-circuit.

[0079] Specifically, the second sub-circuit comprises all other circuits in the load circuit besides the first sub-circuit. When the second comparison result indicates that the real-time current is greater than the second threshold current, the controllable power controller considers the electronic control unit to be malfunctioning and cannot shut off power to the vehicle load. Therefore, it can be determined that a short circuit fault has occurred in the load circuit, excluding the circuit between the electronic control unit and the vehicle load.

[0080] It should be noted that the first sub-circuit and the second sub-circuit include not only the individual circuit units but also the wiring harnesses used to connect the circuit units. Therefore, a short circuit fault in the first sub-circuit also includes a short circuit fault in the wiring harness within the first sub-circuit; similarly, a short circuit fault in the second sub-circuit also includes a short circuit fault in the wiring harness within the second sub-circuit.

[0081] This disclosure not only cuts off the power supply to the load circuit when a common short-circuit fault exists, but also enables the determination of whether the load circuit is malfunctioning and the power supply to it to be cut off even when a load-bearing short-circuit fault exists. This expands the diagnostic scope for load circuit faults and further reduces the risk of vehicle burnout. Furthermore, this disclosure can determine the location of the short-circuit fault based on the comparison between the real-time current and the threshold current in the load circuit, facilitating timely location of the fault after it occurs and simplifying repairs.

[0082] In some embodiments, see continue to see Figure 2 The load circuit control method also includes:

[0083] S193. If a short circuit fault is detected in the second sub-circuit, stop supplying power to the load circuit.

[0084] Specifically, when the controllable power controller determines that a short circuit fault has occurred in a part of the load circuit other than the circuit between the electronic control unit and the vehicle load, the controllable power controller stops supplying power to the load circuit to prevent the load circuit from burning out. At the same time, it can protect the second sub-circuit to prevent further damage to the second sub-circuit and reduce the risk of the vehicle burning out.

[0085] In some embodiments, see continue to see Figure 2 The load circuit control method also includes:

[0086] S162. If a short circuit fault is detected in the load circuit, a prompt message is generated.

[0087] Specifically, when the controllable power controller detects a short circuit fault in the load circuit, it needs to generate a prompt message for the user. For example, the controllable power controller can make a voice broadcast to remind the user that the load circuit is malfunctioning, so as to prevent the user from repeatedly turning on the load circuit without knowing that there is a fault in the load circuit, which could lead to further damage to the vehicle.

[0088] It should be noted that the prompts issued by the controllable power controller can also be in other ways besides voice broadcast, and no specific limitations are made here.

[0089] Figure 3 This is a schematic diagram of a load circuit control device provided in an embodiment of the present disclosure, as shown below. Figure 3 As shown, the load circuit control device includes:

[0090] The first threshold current determination module 201 is used to determine the first threshold current of the load circuit based on the operating state of the vehicle load. The load circuit includes an electronic control unit.

[0091] Specifically, the threshold current for determining a fault in the load circuit differs depending on the vehicle load's operating state. Therefore, the first threshold current determination module 201 needs to first determine the vehicle load's operating state, and then determine the first threshold current of the load circuit based on that state. The first threshold current is the current flowing through the load circuit when the vehicle load is in normal operating condition.

[0092] The real-time current detection module 202 is used to detect the real-time current of the load circuit.

[0093] Specifically, the current in the load circuit when the vehicle load is working normally is different from the current in the load circuit when the vehicle load is abnormal. Therefore, the real-time current detection module 202 needs to detect the real-time current in the load circuit and use the detected real-time current as a comparison object.

[0094] The short-circuit fault judgment module 203 is used to compare the threshold current and the real-time current to obtain a first comparison result, and to determine whether there is a short-circuit fault in the load circuit based on the first comparison result.

[0095] Specifically, the first threshold current is the threshold current of the load circuit under the current operating state of the vehicle load. The first threshold current is compared with the real-time current of the load circuit under the current operating state of the vehicle load to obtain the first comparison result. Based on the first comparison result, the short circuit fault judgment module 203 can determine whether there is a short circuit fault in the load circuit.

[0096] In the solution provided by this disclosure, the controllable power controller first acquires the operating status of the vehicle load, and then determines the first threshold current of the load circuit based on the current operating status of the vehicle load. The real-time current of the load circuit is detected, and compared with the first threshold current. Based on the first comparison result, it can be determined whether there is a short-circuit fault in the load circuit. This disclosure not only cuts off the power supply to the load circuit when a common short-circuit fault exists in the load circuit, but also enables the determination of whether the load circuit is malfunctioning when a load-bearing short-circuit fault exists, thereby cutting off the power supply to the load circuit. This expands the diagnostic scope for load circuit faults and further reduces the risk of vehicle burnout.

[0097] Figure 4 This is a schematic diagram of a load circuit control device provided in an embodiment of the present disclosure, such as... Figure 4 As shown, the load circuit control device includes: a power supply 301, a controllable power controller 302, multiple electronic control units 303, multiple vehicle loads 304, a first sub-circuit 305, and a second sub-circuit 306. The power supply 301 is electrically connected to the controllable power controller 302. The controllable power controller 302 is electrically connected to the multiple electronic control units 303 through the second sub-circuit 306. The electronic control units 303 are electrically connected to the multiple vehicle loads 304 through the first sub-circuit 305.

[0098] For example, taking the branch containing the first electronic control unit 3031 as an example, the power supply 301 is electrically connected to the input terminal of the controllable power controller 302. The output terminal of the controllable power controller 302 is electrically connected to the input terminal of the first electronic control unit 3031 through the second sub-circuit 306. The first output terminal of the first electronic control unit 3031 is electrically connected to the first vehicle load 3041, the second output terminal of the first electronic control unit 3031 is electrically connected to the second vehicle load 3042, and the third output terminal of the first electronic control unit 3031 is electrically connected to the third vehicle load 3043. The current of the first vehicle load 3041 during normal operation is 10A, the current of the second vehicle load 3042 during normal operation is 5A, and the current of the third vehicle load 3043 during normal operation is 3A. The power supply current from the power supply 301 to the first electronic control unit 3031 should at least meet the output requirement of 15A. Furthermore, when the power supply current from the power supply 301 to the first electronic control unit 3031 is less than 15A, the circuit can be considered to have no short-circuit fault.

[0099] For example, in a scenario where only the second vehicle load 3042 needs to operate, and neither the first sub-circuit 305 nor the second sub-circuit 306 has a short-circuit fault, the controllable power controller 302 receives a status indication signal sent by the first electronic control unit 3031. Based on the status indication signal, the controllable power controller 302 determines that only the second vehicle load 3042 is operating, and thus determines the first threshold current to be 5A. At this time, if the real-time current of the load circuit is detected to be 5A, it can be determined that there is no short-circuit fault in the load circuit.

[0100] For example, in a scenario where only the second vehicle load 3042 needs to operate, the first sub-circuit 305 has a short-circuit fault, and the second sub-circuit 306 does not. The controllable power controller 302 receives a status indication signal sent by the first electronic control unit 3031. Based on this signal, the controller determines that only the second vehicle load 3042 is operating, and therefore sets the first threshold current to 5A. If the real-time current of the load circuit is greater than 5A, a short-circuit fault is detected, and the controller generates a notification to the user. The controller then generates a shutdown control command to stop supplying power to all vehicle loads except the second vehicle load 3042. The controller re-acquires the shutdown status indication signal from the first electronic control unit 3031 and, based on this signal, determines the second threshold current to be 5A. If the real-time current of the load circuit is again 5A, a short-circuit fault is detected in the first sub-circuit 305.

[0101] For example, in a scenario where only the second vehicle load 3042 needs to operate, the first sub-circuit 305 has no short-circuit fault, but the second sub-circuit 306 has a short-circuit fault, the controllable power controller 302 receives a status indication signal sent by the first electronic control unit 3031. Based on the status indication signal, the controllable power controller 302 determines that only the second vehicle load 3042 is operating, and thus determines the first threshold current to be 5A. At this time, if the real-time current of the load circuit is greater than 5A, it can be determined that there is a short-circuit fault in the load circuit, and the controllable power controller 302 generates a prompt message to the user. The controllable power controller 302 generates a shutdown control command to stop supplying power to other vehicle loads besides the second vehicle load 3042. The controllable power controller 302 then receives the shutdown status indication signal sent by the first electronic control unit 3031 again, and determines the second threshold current to be 5A based on the shutdown status indication signal. At this time, if the real-time current of the load circuit is still greater than 5A, it can be determined that there is a short-circuit fault in the second sub-circuit 306, and the controllable power controller 302 stops supplying power to the load circuit.

[0102] It should be noted that, Figure 4 The diagram only illustrates three electronic control units and nine vehicle loads. The specific number of electronic control units and vehicle loads will be determined based on actual usage and is not limited here.

[0103] Optionally, when executed by a computer processor, the computer-executable instructions can also be used to execute the technical solutions of any of the load circuit control methods provided in the embodiments of this disclosure, thereby achieving the corresponding beneficial effects.

[0104] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the embodiments of this disclosure can be implemented using software and necessary general-purpose hardware, and of course, they can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solutions of the embodiments of this disclosure, in essence, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of this disclosure.

[0105] This disclosure also provides a vehicle, including: one or more processors; a memory for storing one or more programs or instructions; the processors execute the steps of any of the above methods by calling the programs or instructions stored in the memory, thereby achieving the corresponding beneficial effects.

[0106] Figure 5 This is a schematic diagram of the hardware structure of a vehicle provided in an embodiment of this disclosure. Figure 5 As shown, the vehicle includes one or more processors 401 and memory 402.

[0107] The processor 401 may be a central processing unit (CPU) or other form of processing unit with data processing and / or instruction execution capabilities, and may control other components in the vehicle to perform desired functions.

[0108] The memory 402 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 401 may execute the program instructions to implement the vehicle battery system heating method of the embodiments of this disclosure described above, and / or other desired functions. Various contents such as input signals, signal components, and noise components may also be stored in the computer-readable storage medium.

[0109] In one example, the vehicle may also include an input device 403 and an output device 404, which are interconnected via a bus system and / or other forms of connection mechanism (not shown).

[0110] In addition, the input device 403 may also include, for example, a keyboard, a mouse, etc.

[0111] The output device 404 can output various information to the outside, including determined distance information, direction information, etc. The output device 404 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0112] Of course, for the sake of simplicity, Figure 5 Only some of the components in the vehicle relevant to this disclosure are shown, omitting components such as buses, input / output interfaces, etc. In addition, the vehicle may include any other suitable components depending on the specific application. The beneficial effects of the vehicle in this disclosure embodiment are the same as those in the embodiments described above; please refer to the above for understanding.

[0113] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0114] The above are merely specific embodiments of this disclosure, enabling those skilled in the art to understand or implement this disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to these embodiments, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A load circuit control method, characterized in that, The method, applied to a controllable power controller that supplies power to an electronic control unit (ECU) for controlling the operating state of a vehicle load, includes: A first threshold current of the load circuit is determined based on the operating state of the vehicle load, wherein the load circuit includes the electronic control unit; Detect the real-time current of the load circuit; A first comparison result is obtained by comparing the first threshold current and the real-time current, and it is determined whether there is a short circuit fault in the load circuit based on the first comparison result. If a short-circuit fault is determined in the load circuit, the method further includes: A shutdown control command is generated and sent to the electronic control unit, the shutdown control command being used to instruct the electronic control unit to shut off power supply to the vehicle load; In response to receiving a shutdown status indication sent by the electronic control unit, a second threshold current is determined, the shutdown status indication indicating that power supply to the vehicle load has been shut off; The real-time current of the load circuit is detected again; The real-time current and the second threshold current are compared to obtain a second comparison result, and the location of the short-circuit fault in the load circuit is determined based on the second comparison result.

2. The method according to claim 1, characterized in that, Before determining the first threshold current of the load circuit based on the operating state of the vehicle load, the method further includes: Acquire the status indication signal sent by the electronic control unit; The operating status of the vehicle load is determined based on the status indication signal.

3. The method according to claim 2, characterized in that, The step of determining whether the load circuit has a short-circuit fault based on the first comparison result includes: If the first comparison result is that the real-time current is less than or equal to the first threshold current, it is determined that the load circuit has no short-circuit fault. If the first comparison result indicates that the real-time current is greater than the first threshold current, it is determined that the load circuit has a short-circuit fault.

4. The method according to claim 1, characterized in that, Determining the location of the short-circuit fault in the load circuit based on the second comparison result includes: If the second comparison result is that the real-time current is less than or equal to the second threshold current, then it is determined that a short circuit fault has occurred in the first sub-circuit. The first sub-circuit is the circuit located between the electronic control unit and the vehicle load in the load circuit. If the second comparison result is that the real-time current is greater than the second threshold current, then it is determined that a short circuit fault has occurred in the second sub-circuit. The second sub-circuit is the load circuit other than the first sub-circuit.

5. The method according to claim 4, characterized in that, Also includes: If a short-circuit fault is determined to have occurred in the second sub-circuit, power supply to the load circuit shall be stopped.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: If a short circuit fault is detected in the load circuit, a prompt message is generated.

7. A load circuit control device, characterized in that, include: The first threshold current determination module is used to determine the first threshold current of the load circuit based on the operating state of the vehicle load, wherein the load circuit includes an electronic control unit. A real-time current detection module is used to detect the real-time current of the load circuit; A short-circuit fault detection module is used to compare the threshold current and the real-time current to obtain a first comparison result, and to determine whether the load circuit has a short-circuit fault based on the first comparison result; if a short-circuit fault is determined in the load circuit, it is used to generate a shutdown control command and send it to the electronic control unit, the shutdown control command being used to instruct the electronic control unit to shut off power supply to the vehicle load; in response to receiving a shutdown status indication sent by the electronic control unit, it determines a second threshold current, the shutdown status indication being used to indicate that power supply to the vehicle load has been shut off; it detects the real-time current of the load circuit again; compares the real-time current and the second threshold current to obtain a second comparison result, and determines the location of the short-circuit fault in the load circuit based on the second comparison result.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program or instructions that cause a computer to perform the steps of the method as described in any one of claims 1 to 6.

9. A vehicle, characterized in that, include: One or more processors; Memory, used to store one or more programs or instructions; The processor executes the steps of the method as described in any one of claims 1 to 6 by invoking programs or instructions stored in the memory.

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